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Algebra 16 Online
OpenStudy (anonymous):

how do I graph this? x2 + y2 = 4 y = x + 2

OpenStudy (anonymous):

x² + y² = r² is the equation of a circle centered at the origin with a radius of r. In your top equation r² = 4. What's the radius of that circle?

OpenStudy (anonymous):

i dont know

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